Dec., '07] ENTOMOLOGICAL NEWS. 425 



There are other differences mentioned by Scudder. In 

 calanus the discal stigma of the male is oval, nearly twice as 

 long as broad, while in cdwanisii it is narrow and three times 

 as long as broad. According to Scudder's illustrations, the 

 scales of the discal stigmas differ slightly in form, those of 

 calanus being slightly broader in form and differently shaped 

 at the base, where they are rounded, while in cdu'arclsii they 

 are angulated at the base and the sides straighter and less 

 tapering. According to Scudder's figures, the abdominal ap- 

 pendages of the males also differ distinctly, but I have never 

 made a study of these parts. There is one point, however, 

 which I consider of very great importance, and that is, the 

 occurrence of calanus where cdivardsii is not found. Were 

 they merely forms of one species, they should fly together, 

 and while they, no doubt, do in some localities, in others they 

 do not. In Montreal calanus occurs in fair abundance on the 

 blossoms of the common milkweed (Asclcpias conniti, De- 

 caisne), being, in fact, the only Thecla we have which is at all 

 common, but cdu'ardsii has never been taken at Montreal, so 

 far as I am aware, while I have taken it abundantly in High 

 Park, Toronto, on the blossoms of New Jersey tea (Ceanothus 

 anicricainis, L.). 



I have never bred edwardsii, but found a larva of calanus 

 on the red oak (Oucrcus rubra, L. ), and reared it to the imago. 



Until, therefore, far more weighty arguments are brought 

 forward than any of those adduced by Dr. Skinner, I shall 

 hold these forms separate in my collection as distinct species. 



RARE HEMIPTERA IN VIRGINIA. During the past season I have taken 

 several rare species near Falls Church. Isowetopus, which I had not seen 

 for four or five years, was found in two localities on the bark of black 

 oak trees July 27, August 2. It was the unmarked species ; both of our 

 species of this genus are undescribed. Heidemcninia I'i.riiforwis, which 

 belongs to the same family as Isouietopus I found once on a small black 

 oak tree July 20. While looking on tulip trees for Psocidae I found adults 

 and cast nymphal skins of a Tingis, T. uniforinis. It was in the early 

 part of August, and none were found on other trees. On the foliage of 

 tulip trees I found an interesting capsid Eucerocoris ,<,'/^//Wrt/w.v quite 

 abundantly in August. They are difficult to recognize at rest, and when 

 disturbed are very active and difficult of capture. N. BANKS. 



